Revert of Revert "Revert of Moving gRPC support interfaces out of cronet and into a new component.

components/grpc_support/test/get_stream_engine.h

Index: components/grpc_support/test/get_stream_engine.h
diff --git a/components/grpc_support/test/get_stream_engine.h b/components/grpc_support/test/get_stream_engine.h
deleted file mode 100644
index 227733d4ab9ab107171ca3e9a69388da440230ef..0000000000000000000000000000000000000000
--- a/components/grpc_support/test/get_stream_engine.h
+++ /dev/null
@@ -1,19 +0,0 @@
-// Copyright 2016 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef COMPONENTS_GRPC_SUPPORT_TEST_GET_REQUEST_CONTEXT_GETTER_H_
-#define COMPONENTS_GRPC_SUPPORT_TEST_GET_REQUEST_CONTEXT_GETTER_H_
-
-struct stream_engine;
-
-namespace grpc_support {
-
-// Returns a stream_engine* for testing with the QuicTestServer.
-// The engine returned should resolve kTestServerHost as localhost:|port|,
-// and should have kTestServerHost configured as a QUIC server.
-stream_engine* GetTestStreamEngine(int port);
-
-}  // namespace grpc_support
-
-#endif  // COMPONENTS_GRPC_SUPPORT_TEST_GET_REQUEST_CONTEXT_GETTER_H_